这么奇怪的问题。我在这里生成我的线程。这应该保持循环直到我杀了它。
void accept_connections(int sock_fd)
{
while(1)
{
/*Whole bunch of irrelevant stuff*/
pthread_create(&(new_connect->thread), NULL, &thread_dispatch, new_connect);
printf("Thread spawned.\n");
pthread_join(new_connect->thread, NULL);
/*Exit when catches a sigint */
}
}
pthreads运行的函数:
void* thread_dispatch(void* new_connect)
{
printf("Thread working.\n");
http_t *http = malloc(sizeof(http_t));
int bytes_read = http_read(http, fd);
printf("read %d\n",bytes_read); //this prints
printf("status %s\n",http->status); //this prints
printf("body %s\n",http->body); //this prints
const char* get_status = http_get_status(http);
char* filename = process_http_header_request(get_status);
printf("filename: %s", filename); //this doesn't print unless I do exit(1) on next line
return NULL;
}
为什么不打印最后一个语句?我正在调用pthread_join,它应该等待线程返回,然后终止,对吧?
我的线程是否以这种方式正确终止?
答案 0 :(得分:3)
您的上一行未打印,因为stdout
是行缓冲的,并且您在最后\n
内没有换行符(printf()
)。 exit()
可能正在刷新stdout
缓冲区。